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With only leather, wood, And primitive tools
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Secrets of the Underground

With only leather, wood,And primitive tools

With only leather, wood,
And primitive tools

Full Transcript

00:00:01.000 --> 00:00:04.169
With only leather, wood, And primitive tools.
Duration
4 seconds
Views
14
Timestamp in Movie
00:34:28
Uploaded
Jul 12, 2025
Season
1
Episode
7
Genres
documentary

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Movie Summary

Using cutting-edge technologies such as ground penetrating radar (GPR), LIDAR (Light Detection and Ranging), and 3-D imaging, scientists research fascinating underworlds of secret tunnel networks, ancient structures, and bizarre g...
S01 • E01 I'm heading to meet Dr John Vidale, - Secrets of the Underground 00:08
I'm heading to meet Dr John Vidale,
S01 • E02 Has anybody found any indications of burial mounds? - Secrets of the Underground 00:04
Has anybody found any indications of burial mounds?
S01 • E07 Shockingly, he completed The 4,500 miles voyage, - Secrets of the Underground 00:08
Shockingly, he completed The 4,500 miles voyage,
S01 • E03 One wrong move could trap the ROV or me underneath. - Secrets of the Underground 00:05
One wrong move could trap the ROV or me underneath.
S01 • E08 I'm descending to the bottom of Lake Michigan to get a closer look - Secrets of the Underground 00:10
I'm descending to the bottom of Lake Michigan to get a ...
S01 • E01 In this particular area, - Secrets of the Underground 00:07
In this particular area,
S01 • E02 But Jarrod tells me he's seen similar anomalies - Secrets of the Underground 00:06
But Jarrod tells me he's seen similar anomalies
S01 • E07 Is this archaeological evidence That will rewrite history, - Secrets of the Underground 00:07
Is this archaeological evidence That will rewrite history,
S01 • E02 And taken as a whole, their pattern and scale - Secrets of the Underground 00:10
And taken as a whole, their pattern and scale
S01 • E08 At first, I expected this peculiar-shaped formation - Secrets of the Underground 00:09
At first, I expected this peculiar-shaped formation
S01 • E03 You could lose a lot of water in a lake like this - Secrets of the Underground 00:07
You could lose a lot of water in a lake like this
S01 • E07 To get a better look, I'm going To deploy a new technology. - Secrets of the Underground 00:04
To get a better look, I'm going To deploy a new technol...
S01 • E01 So could big earthquakes lead to big mounds? - Secrets of the Underground 00:04
So could big earthquakes lead to big mounds?
S01 • E01 I tell John about my findings using the board, hammer and sand. - Secrets of the Underground 00:05
I tell John about my findings using the board, hammer and sa...
S01 • E02 So, stone would make a radar anomaly like that. - Secrets of the Underground 00:05
So, stone would make a radar anomaly like that.
S01 • E03 Enough to offset the inflow from rainfall and runoff - Secrets of the Underground 00:07
Enough to offset the inflow from rainfall and runoff
S01 • E08 For one thing, the geological record indicates this site, - Secrets of the Underground 00:10
For one thing, the geological record indicates this site,
S01 • E03 I think the next step is to get some sort of flow meter in there - Secrets of the Underground 00:07
I think the next step is to get some sort of flow meter in t...
S01 • E02 These findings won't help us determine - Secrets of the Underground 00:08
These findings won't help us determine
S01 • E01 People put steel filings in to make pretty patterns if you shake it, - Secrets of the Underground 00:07
People put steel filings in to make pretty patterns if you s...